Giải nhanh giúp với.
Giải giúp mình với lời giải chi tiết ạ^^
Giải nhanh nhanh em tick cho ạ
Giải nhanh nhanh giúp mình với
Question 8
2 She has yellow hair and black eyes
3 My father likes growing many flowers in the garden
4 Many people are going o the pagoda in order to have a happy year for their family this weekend
Question 9
1 Her family has 6 people
2 My sister really likes playing football on the weekend
3 They never make a cake on the weekend
4 I would like you to go to the pagoda with me
Giải nhanh nhanh giúp mình với
Giải nhanh nhanh giúp mình với
a: \(=400\cdot35=14000\)
b: \(=17\cdot85-120=1700-120=1580\)
Giải nhanh nhanh giúp mình với
Giải giúp mình nhanh nhanh với ạ
Câu 5.
Vận tốc hạt khi nó đập vào bản âm:
\(\dfrac{mv^2}{2}=A=qEd=1,5\cdot10^{-2}\cdot3000\cdot0,2=9J\)
\(\Rightarrow v=\sqrt{\dfrac{2A}{m}}=\sqrt{\dfrac{2\cdot9}{4,5\cdot10^{-6}\cdot10^{-3}}}=63245,5532\)m/s
Câu 6.
Điện năng bàn là tiêu thụ trong t=2h là:
\(A=U\cdot I\cdot t=220\cdot4\cdot2\cdot3600=6336000J=1,76kWh\)
giải nhanh giúp mình với ạ, nếu được thì giải thích giúp mình với nha, mình cảm ơn
Câu 6: Để hàm số y=(1-m)x+3 nghịch biến trên R thì 1-m<0
=>m>1
=>Chọn B
Câu 7: D
Câu 10: (D)//(D')
=>\(\left\{{}\begin{matrix}3m+1=2\left(m+1\right)\\-2\ne-2\left(loại\right)\end{matrix}\right.\Leftrightarrow m\in\varnothing\)
=>Chọn D
Câu 11: \(x^2+2x+2=\left(x+1\right)^2+1>=1>0\forall x\)
=>\(\sqrt{x^2+2x+2}\) luôn xác định với mọi số thực x
=>Chọn A
Câu 12: Để hai đường thẳng y=x+3m+2 và y=3x+2m+3 cắt nhau tại một điểm trên trục tung thì \(\left\{{}\begin{matrix}1\ne3\left(đúng\right)\\3m+2=2m+3\end{matrix}\right.\)
=>3m+2=2m+3
=>m=1
=>Chọn C
Mọi người giải giúp em với.
Giải nhanh giúp em.
Em cảm ơn.
1 Japanese is too difficult for me to learn
2 If he felt well, he wouldn't go to bed early
3 I wish I hadn't gone out in the rain
4 They had me carry te box upstairs
5 Your sister is too young to enjoy this film
6 THey had this letter posted by me
7 The morning was too cold for them to go out
8 If the tickets were cheap enough, we would go there
9 The pupils collected these old clothes
10 The coffee is so excellent so I can drink it
11 Her house was sold 2 years ago
12 Some tickets was bought there by him
13 Waste paper was recycled to save money and labour
14 The TV set was so heavy that the girl couldn't move it
15 I will have someone type the report for you
16 There was so much fog that the driver couldn't see far
17 THe day was fine enoigh for them to enjoy sunbathing on the beach
18 I wish your were here now
19 Susan offeref me to lend her some money
20 They asked me is I could fill in the form
21 The acrobat whom we saw on TV last night is his uncle
22 The traffic jam prevented us from coming late
23 It is sucha wide gate that the struck can't get through it
24 Thet novel was written by Charales Dickens
25 Your answer is too difficult for me to answer
26 We've had so much homework that we can't find time to go out
27 He can't borrow the book because he don't have the library card
28 If the buses weren't full up, they would stop
29 She is not strong enough to carry her luggage
30 The dog which is playing with a ball is a big one
Giải câu 2 nhanh nhanh giúp mình với
Giải nhanh nhanh giúp mình với chu mi la
\(\Rightarrow A=2^2+2^2+2^3+...+2^{200}\)
\(\Rightarrow A=2^3+2^3+2^4+2^5+...+2^{200}\)
\(\Rightarrow A=2^4+2^4+2^5+...+2^{200}\)
....
\(\Rightarrow A=2^{201}\)